Disks Single Slit and Multiple Slits For Difraction Experiences

Optical bench 3 accessory 05:
Disks single slit and multiple slits for difraction experiences:
1  Single slit disk: ≥ 3 single slits, ≥ 3 diffraction patterns and 1 variable width slit
1  Multi slit disk:  ≥ 3 double slits,  ≥ 3 multiple slits (3, 4 or 5). Possibility of single and double comparisons                 
1 Laser source <3mw adequat to the setup - Wavelength 660-680 nm - Delivered with adaptor 9V
includes two slit wheels with holders designed to match the height of the slits to the height of the diode laser. All components clip directly to the Optics Bench from the Basic Optics System. The slit wheels eliminate the frustration of trying to change the slits in a darkened room. To change the slit being illuminated by the laser, the slit wheel is simply rotated to the next positive click, which locks another slit into position.
The Single-Slit Wheel includes four single slits of different widths, two circular apertures, one line/slit comparison, one opaque line, a variable width slit, and four patterns.
The Multiple-Slit Wheel includes four double slits, a set of four multiple slits having the same slit width and separation (2, 3, 4, and 5 slits), four slit comparisons, and a variable double slit.